Method of coating articles



' METHOD OF COATING ARTICLES.

APPLICATION FILED MAY 14. 192].

Patented Jan. 10, 1922.

HARRY BLUMENTHAL AND HERMAN BLU'MENTHAL, 0F HARTFORD, CONNECTICUT.

METHOD OF COATING ARTICLES.

1L,43,fi8.

Application filed May 14,

To all w from it may concern.

Be it known that we, HARRY BLuMnN'rI-raL and HERMAN BLUMENTHAL, citizens of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Methods of Coating Articles, of which the following is a specification.

This invention relates to a method of coating stove pipes. We have found that by the method We can apply a coating to the pipe in an effective and inexpensive manner and that the coating will not be subject torust, that is will prevent with certainty rust or corrosion of the thing to which it is applied, that it cannot be burned off at usual temperatures, that it will not get dirty or at least any thing that may lodge thereon can be quickly and easily removed with a minimum of effort, and that the clothes cannot be soiled thereby. A pipe made in accordance with the method possesses many other features of novelty and advantage which with the foregoing will be set forth at length in the following description.

Referring to the drawings:

Figs. 1, 2, and 3 are elevations of apparatus suitable for carrying the method into effect.

Initially we dip the pipes into a proper solution, these pipes being such as are found in kitchens and like places. The solution which may be of any suitable kind is desirably some enamel such as black enamel of commerce which is in the tank or vat 2 up to approximately the level 3. The stove p1pes 4 in the illustration given, are connected to wires 5 hung for instance from a rod 6. When a sufficient number of stove pipes 4 are associated with the rod 6 in the manner set forth, the rod is lowered so that the stove pipes can be immersed or dipped into the liquid in the tank or vat 2, and the dipping continues for about one'minute. At the conclusion of the dipping step the pipes are raised out of the enamel solution and. are

.then moved onto the inclined drain board 7 where any excess of the enamel can pass from the pipes onto the board and flow into .these characteristics,

Specification of Letters Patent. Patgntgd Jam, 1Q 1922,

1921. Serial No. 469,540.

the vessel 8, which when it has sufficient of the liquid in it may be emptied into the tank or vat 2.

After the pipes have been drained thoroughly they are placed in a suitable oven as 9 for a proper length of time, generally about oneand one half hours, where they are subjectedto a temperature of ractically 350 F. which permanently sets t e coating which possesses the attributes hereinbefore set forth.

After the pipes are baked in the oven in the manner set forth, they are subj ected when cooled to the solution in the tank or vat 2, and then drained on the board 7 and again baked in the oven 9 which efl'ectually sets the coating so thatthe finished pipe possesses the advantages hereinbefore set forth and many others. 7

There are several features to which we wish to call attention. One of the important features is the fact that none of the liquid is lost, as when the pipes 4 in a group are taken from the tank or vat 2, they are placed upon the drain board 7 from which the excess solution flows into the vessel 8, which is subsequently emptied into the tank or vat 2. In this way, naturally, economy is attained. Another and vastly important feature is the subjection of the pipes in the oven to a temperature of approximately 350 F We have found after laborious experiments extending over a considerable length of time, that this is an. ideal and virtually perfecttemperature, in that when the pipes are finally taken from the furnace they have a silky, glossy and sheeny finish, which not only possesses but also adequately protects the pipes from deleterious effects of various kinds.

What is claimed is:

A method of coating stove pipes, which comprises suspending the pipes, then while they are suspended, immersing them 1n an enameling solution, then lifting the pipes from the solution, then placing them at an angle to drain from them excess solution which is caused to pass into the tank containing the solution, then placing the pipes in a furnace and subjecting them to a heat of approximately350 F.,' then removing the pipes from the furnace, then dipping In testimony whereof we aflix our signathem again in the solution in the same relatures. tion that theywvere before, then draining HARRY BLUMENTHAL. the pipes and causing the excesssolution HERMAN BLUMENTHAL,

v 5 to pass back into the tank, and then sub- Witnesses: I

jecting'the pipes to approximately 350 F. DANIEL BLUMENTHAL, in a furnace. I MIKE BLUMENTHAL. 

